Window glass insulation system



March 10, 1942. s, A, ONE K 2,276,112

WINDOW GLASSINSULATION SYSTEM Filed Jan. 24, 1940 SamueZ J7. Swnebagfi',

Patented Mar. 10, 1942 UNITED STATES PATENT OFFICE WINDOW GLASSINSULATION SYSTEM Samuel A. Stoneback, Philadelphia, Pa. ApplicationJanuary 24, 1940, Serial No. 315,344

4 Claims.

My invention relates to a new and useful window glass insulation systemand has for its object to provide means for connection with the dead airspace of an insulated window to permit breathing" and simultaneouslydehydrate the static air contained within the dead air space.

The invention is adapted for use in connection expansible andcontractible receptacle in a normal condition.

Fig. 5 is a sectional view thereof and showing in dotted lines theexpanded and contracted conditions of the receptacle.

Fig. 6 is a sectional view similar to Fig. 2 illustrating a modifiedmeans for mounting the exwlth all styles or types of windows such assash,

bulk, movable and stationary windows having two panes of sealed glassspaced to provide" a dead air space for insulation purposes.

Another object of the invention is to provide an expansible andcontractible receptacle containing a dehydrating agent and connected bypassageways with a dead air space of an insulated window structure,whereby any increase in the static air pressure may be accommodated andsuch static air dehydrated to prevent the formation ofmist on the insideof the window glasses.

A further object of the invention is to provide means for housing theexpansible and contractible receptacle.

A still further object of the present invention is to utilize thegeneral arrangements disclosed in my Patents Nos. 2,042,077, dated May26, 1936, and 2,117,581, dated May 17, 1938, andcombine therewith anautomatic dehydrating, temperature expansion and contracting device toprevent clouding or breaking of the window glass due to changes oftemperature on either or both sides of the window relative to thebuilding in which the window is located. I

Still another object of the invention is to provide an arrangement thatmay be preconstructed and have a pane of glass glazed therein, the wholeto be mounted on a window frame or sash and sealed to form the dead airspace for insulation purposes.

With theabove and other objects in view this invention consists of thedetails of construction and combination of elements hereinafter setforth and then designated by the claims.

In order that those skilled in the art to which this inventionappertains may understand how to make and use the same, I will describeits construction in detail, referring by numerals to the accompanyingdrawing, forming a part hereof, in which:

Fig. 1 is a view having portions broken away and showing oneconstruction of my invention.

Fig. 2 is an enlarged fragmentary sectional view thereof.

Fig. 3 is a face view of Fig. 2 with portions broken away to illustratedetails of construction.

Fig. 4 is an enlarged perspective view of the tra pane of glass.

- In carrying out my invention as herein embodied [0 represents a windowframe which may be in the form of a movable sash as shown, mounted toslide or swing in another frame or such window frame may be stationaryas in bulk or other similar structures. In the window frame is mountedthe usual or'primary pane of glass ll sealed by the putty l2 in theordinary manner.

A secondary pane of glass I3 is mounted on the window frame, preferablyagainst a face thereof, in spaced parallel relation to the; primary paneof glass to provide a dead air space M. In the arrangements illustratedin Figs. 1, 2 and 3, which is covered by my Patent No. 2,042,- 077,dated May 26, 1936, a glazing moulding l5 overlaps the edges of thesecondary pane of glass and is secured to theface of the window frame.This molding has one or more grooves IS in its inner face adapted tocontain a suitable water-proof plastic material I! to seal the jointsand prevent any air entering or leaving the dead air space M by leakageor seepage.

In Fig. 4 a holder ill for the secondary pane of glass I3 is shown asbounding the. edges of said glass in which the latter is glazed. Saidholder has a generally U-shaped or channeled portion to receive theedges of the pane of glass and the plastic sealing material and also hasa lip projecting from the said channeled portion whereby the holder maybe attached to the window frame by screws, nails or other equivalentfastening devices. This arrangement permits a working man to take themeasurements of a window to .be equipped with the insulation system andhave the assembly made up at a factory or work shop so that it is onlynecessary to hang the assembled structure for installation.

The dead air space It provided by either of the above mentionedconstructions has one or more passageways or ducts l9 leading therefromthrough some portion of the window frame and these passageways may bestraight or angular so long as they lead to the location of theexpansible and contractible receptacle 20. This receptacle may be madeof latex tubing having the ends sealed as at 2|. The interior of thereceptacle is in communication with the dead air space ll through thereceptacle as occasion requires.

The flow of air through the nipples may be controlled by the valvearrangements covered by my Patent No. 2,117,581, dated May 17, 1938.

The receptacle 20 may be located in any suitable place as on a shelf, onthe floor or hung on the wall below the window but preferably saidreceptacle is enclosed in a housing, two different forms of which aredisclosed in Figs. 2 and 6. As illustrated particularly in Fig. 2, arecess 23 is formed in the window frame or sash open at the front andsaid opening may be closed by a door or cover 24 hinged at 25 andnormally retained in a closed position by one or more spring latches 26which will permit the door 24 to open should the receptacle expand to asize larger than the recess 23 or the housing as a whole. In the form ofhousing illustrated in Fig. 6, the bottom rail of the holder isfashioned to provide a back wall 21 of a housing below the channel, fromwhich wall projects a rib 28 to enter a groove 29 in the face of thewindow frame, a

ondary pane of glass placed againsta face of the frame in spacedrelation to the primary pane of glass to form a dead air space withwhich communicates the ends of the ducts at the top of the frame lowerrail, means to seal the edges of the secondary pane of glass air tight,a contractible and expansible receptacle located in the recess, adehydrating agent in the receptacle,

.means carried by said receptacle and projecting bottom wall 30 and anupstanding short front wall 3!. End walls 32' may be provided ifdesired. To the upper edge of the front wall 3| is hinged the door orcover 33 including a front and inturned top and said door or cover isnormally retained in a closed position by one or more spring latches '34which provides for access to the receptacle and permits said receptacleto push the door open if it expands sumciently to more than fill thehousing.

The receptacle contains a dehydrating agent 35 such as silica jell oractivated alumina which will absorb moisture from the air as it flowsfrom the dead air space due to expansion. Whenever the air in the deadair space expands it will be forced through one or both of the nipplesinto ,the receptacle and thus prevent excess pressure on the panes ofglass which might cause breakage or other damage thereto. The air forcedinto the receptacle will cause the latterto expand to some such positionas indicated by the dotted lines 36 in Fig. 5. As the air in the deadair space contracts due to a change in temperature that air in thereceptacle will be withdrawn and returned to said dead air space andwill be free of moisture. If substantially all of the air is withdrawnfrom the receptacle, the walls will contract or collapse to someposition such as indicated by the dotted lines 31. The circulation ofthe air through the receptacle containing the dehydrating agent will beso dry that the glass will not become fogged to interfere with thevisibility.

Of course I do not wish to be limited to the exact details ofconstruction herein shown and described as these may be varied withinthe scope of the appended claims without departing from the spirit of myinvention.

Having described my invention what I claim as new and useful is:

1. In a window, a frame having a recess in the lower rail with ductsleading from said recess to the top of said rail, a primary pane ofglass therein and having the edges sealed air tight, a secinto the ductsand completely filling the latter to form communications between thedead air space and the interior of the receptacle to permit breathing ofthe window and simultaneously dehydrate the substantially static air ofthe dead air space, a door hinged to the frame to close the recess, andspring means to normally hold the door closed while permitting it to beopened by pressure due to expansion of the receptacle beyond theconfines of the recess.

2. In a window glass insulation system, a frame having primary andsecondary panes of glass sealed to provide a dead air space from whichlead ducts, a latex receptacle capable of expansion and contraction andlocated outside of the dead air space, a dehydrating agent in thereceptacle, nipples on the receptacle projecting into the ducts andfilling the same to provide communications between the dead air spaceand the interior of said receptacle, and a housing to receive and holdthe receptacle, said housing including a hinged door normally retainedin a closed position by a spring latch which permits a the door-to beforced open if the receptacle expands beyond a predetermined extent.

- 3. The combination with a window frame having a primary pane of glasstherein, of a holder secured to a face of the window frame, said holderincluding channelled portions to receive a plastic sealing material andthe edges of a pane of glass, a secondary pane of glass glazed in saidholder prior to the mounting thereof on the windead air space to a faceof said rail which face also has a groove therein, a portion of ahousing including a back wall and a bottom wall and a short upstandingfront wall formed with the lowerpart of the holder, said back wallhaving holes to register with the ducts and also provided with a rib toenter the groove in the face of the window frame rail, a door hinged tothe short and expansible receptacle in the housing, a dehydrating agentin the receptacle, and nipples carried by the receptacle and projectinginto the ducts and completely filling the latter to providecommunications between the interior of said receptacle and the dead airspace.

4. In a window glass insulation system, a sash having primary andsecondary panes of glass sealed to provide a dead air space, a' housingcarried by said sash and including a hinged door normally retained in' aclosed position by a spring latch, a normally contracted latexreceptacle located in said housing, means to provide a plurality ofcommunications between said receptacle and the dead air space, and adehydrating agent in the receptacle.

SAMUEL A. STONEBACK.

